LT3746IUHH#TRPBF

LED Driver IC Overview

The LT3746IUHH#TRPBF is a 32-channel LED driver IC featuring an integrated buck controller. It supports input voltages from 6V to 55V and delivers up to 30mA per channel. The device operates at switching frequencies between 205Hz and 1.05MHz, utilizing PWM dimming for brightness control. Packaged in a 56-WFQFN exposed pad, it functions within a temperature range of -40°C to +125°C TJ.

LED Driver IC Feature Summary

• Integrates a step-down (buck) DC-DC controller with 32 independent LED output channels
• Supports wide input voltage range from 6V to 55V for flexible power supply options
• Enables precise brightness control through high-frequency PWM dimming capabilities

LED Driver IC Applications

• LED backlighting systems
• Commercial signage displays
• Indicator lighting arrays

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm that the 56-WFQFN package dimensions align with PCB footprint requirements. Ensure thermal management strategies account for the exposed pad design to maintain junction temperatures within the specified operational limits during high-load conditions.

LED Driver IC Selection Notes

Select this component for designs requiring multi-channel LED control with integrated power regulation. It is suitable for applications needing wide input voltage tolerance and precise PWM dimming. Consider the 56-pin QFN package size and thermal dissipation needs relative to the total current load across all 32 channels.

LED Driver IC Part Context

This part belongs to the LT3746 family of LED drivers from Analog Devices. It combines power management and LED driving functions into a single solution. The series is designed for high-efficiency lighting applications where space constraints and thermal performance are critical factors for system integration.

LED Driver IC Replacement Considerations

LT3746EUHH#PBF is a documented alternative variant within the same product family.